Amis qui seront présents

Amis qui seront présents

Description

Familiarity with basic architecture principles, such as system boundary and separation of concerns

Materials or downloads needed in advance :

A laptop with administrator privileges and the ability to run local virtual machines

Docker installed

What you'll learn :

Learn how to design systems that can evolve over time in the face of technological and business change

Understand when the “single system of record” pattern applies and when it does not

Learn how to combine microservices with legacy systems

Learn to make your systems glide smoothly from web to mobile to chat apps

Find new ways to separate concerns for better information hiding

Learn about ways to isolate information to allow independent change

Learn how to build systems in simpler pieces that can be recombined and recomposed to enable new business capabilities, all without running afoul of YAGNI

Know why aiming for the “end state” never works and what to do about it

Participants should plan to attend both days of this 2-day training. Training passes do not include access to tutorials on Monday.

Description :

Architecture plans in enterprises tend to resemble late-night infomercials. First, you see a person or system that seems incapable of survival—a situation that can be immediately rectified if you just buy into the product. One popular infomercial shows incompetent people mangling tomatoes transitioning into Ginsu-wielding sous chefs; the architecture pitch starts with hideous complexity then moves to clean orthogonal box diagrams. Operators are always standing by.

Real architecture never reaches that blissful end state. Something always interrupts the program: businesses change, technology changes, or funding dries up. What would happen if you did reach the end state, anyway? Is IT in the company done? Of course not.

The truth is that there is no end state. We must all learn to build systems that evolve and grow. We need to stop aiming for the end state and understand that change is continuous. We cannot predict the details, but we can learn the general patterns.

Michael Nygard demonstrates how to design and architect systems that admit change—bending and flexing through time. Using a blend of information architecture, technical architecture, and some process change, Michael walks you through examples of rigid systems to show how to transform them into more maneuverable architecture.

This workshop includes both teaching and hands-on design sessions. Design sessions will be paper and whiteboard work in small groups. You’ll work on real problems drawn from a variety of industries. If you’re a developer or architect working with medium to large architectures and building applications in the context of existing systems or transitioning to new systems, this is the tutorial for you.

Outline

Day 1:

Foundations

Information hiding

Decision hiding

Separation of concerns

Architectural styles

Architectural patterns

Layers

Pipes and filters

Broker

Proxy

Components and glue

Interpreter

Microkernel

Event stream/CQRS

Command

Application architecture

Consumer driven contracts

Segregated interfaces

Bounded context

Layers redux

Hexagonal architecture

Day 2 :

Living in complex systems

Organizations as complex systems

Local viewpoints

Local optimization, global deoptimization

Second-order effects, the law of unintended consequences

Team-scale autonomy

Safety in systems

Independent action

“Without permission”

Evolutionary architectures

Microservices

Message-driven systems

Microkernels

Information architecture

Identifiers and their many issues

Single system of record

Augment upstream

Contextualize downstream

Pluralism

Open-world systems

High-leverage architecture

Data/metadata unification

Rules-based systems

Generalized minimalism

Michael Nygard

Cognitect, Inc.

Michael Nygard is an architect at Cognitect, the company behind Clojure, ClojureScript, Pedestal, and Datomic. Michael has been a professional programmer and architect for over 15 years. In that time, he has delivered systems to the US government, the military, banking, finance, agriculture, and retail industries, and his work has spanned domains as diverse as B2B exchanges, retail commerce sites, travel and leisure sites, an information brokerage, and applications for the military and intelligence communities. Along the way, Michael has shared his painfully won experience by mentoring, writing, and speaking. Michael contributed to the O’Reilly book 97 Things Every Software Architect Should Know and authored the best seller Release It! Design and Deploy Production-Ready Software.